Did you make sure to activate the plugin on the plugin page?
Also, in order to make sure there are not any conflicts with other plugins, try deactivating all other plugins.
After you’ve tried those 2 things, email me at james@huzzaz.com and I will see what else I can do to help.
Actually, I figured out what the problem is.
You are getting a mixed content error because our video gallery doesn’t support https:// currently. We are looking to add it in the near future though. If this is a problem for you, I can refund you.
If you go to the http:// version of your site, you can see the video gallery.
http://www.know-your-role.com/raiding/
Also, it seems that you are getting multiple mixed content errors (not just from Huzzaz) so you might want to check them out.